Double-motor Double-blade Booster Fan

ABSTRACT

The present invention discloses a double-motor double-blade booster fan, including: a fan outer frame, a rotating mechanism installed in a center position of the fan outer frame, and a wire (circuit connection) electrically connected with the rotating mechanism and having a USB interface, wherein the rotating mechanism includes a motor bracket; a first motor and a second motor arranged on both ends of the motor bracket respectively; a shifting yoke installed on the motor bracket; a first blade installed on an output shaft of the first motor; and a second blade installed on an output shaft of the second motor, wherein the first blade includes a first axle center and first leaf blades uniformly dispersed on an outer circumference of the first axle center, and the second blade includes a second axle center and second leaf blades uniformly dispersed on an outer circumference of the second axle center. The present invention not only has simple structure and stable performance, but also has larger wind volume and wind pressure than those of a traditional single-blade booster fan, is a design that integrates efficacy and energy saving and has great market application and popularization values.

TECHNICAL FIELD

The present invention relates to the technical field of electricalappliances, and more particularly relates to a double-motor double-bladebooster fan.

BACKGROUND

Personal computers have a history of twenty or thirty years since itsintroduction into a market. Heat dissipation is always an importantproblem. As the efficacy of CPU, graphics cards, power supplies and thelike is gradually increased along with scientific and technologicalprogress, internal temperature of a computer case is more and more high.Heat dissipation is always a problem most valued by users. However, anair flow principle of a fan is a most direct and effective solution.

Generally, a traditional fan produces an air flow by that a motor drivesa blade to rotate. However, one blade can only produce an air flow in asingle direction, causing that a convection effect of the produced airflow is limited and effective air supply and heat dissipation effectscannot be achieved. If a plurality of electric fans are placed, spacesare occupied and power is consumed.

A patent literature with an application No. CN201320041662.4 discloses adouble-blade mini fan. Although wind power of the fan can be effectivelyincreased through an interaction between two blades, because the bladesand a motor are placed in a containing space formed by a front frame anda fear frame in the invention, thickness of the fan is increased and anappearance is not beautiful while a structure is complicated andmaintenance is not easy. Moreover, a fixing component of the motor isinclined to one side, which is easy to cause a problem of damage to theblades caused by inclination of the motor after long-term use.

Therefore, the problem to be urgently solved by those skilled in the artis how to provide a double-motor double-blade booster fan with simplestructure and stable performance.

SUMMARY

In view of this, the present invention provides a double-motordouble-blade booster fan.

To achieve the above purpose, the present invention adopts the followingtechnical solution:

A double-motor double-blade booster fan comprises a fan outer frame, arotating mechanism installed in a center position of the fan outerframe, and a wire (circuit connection) electrically connected with therotating mechanism and having a USB interface, wherein the rotatingmechanism comprises a motor bracket; a first motor and a second motorarranged on both ends of the motor bracket respectively; a shifting yokeinstalled on the motor bracket; a first blade installed on an outputshaft of the first motor; and a second blade installed on an outputshaft of the second motor, wherein the first blade comprises a firstaxle center and first leaf blades uniformly dispersed on an outercircumference of the first axle center, and the second blade comprises asecond axle center and second leaf blades uniformly dispersed on anouter circumference of the second axle center.

Preferably, screw holes are formed uniformly at the outer circumferenceof the fan outer frame in the double-motor double-blade booster fan.

Preferably, the motor bracket is fixedly connected with the fan outerframe in the double-motor double-blade booster fan.

Preferably, the first blade and the second blade rotate in oppositedirections, and a distance of 50 to 150 mm is kept between the firstblade and the second blade in the double-motor double-blade booster fan.

Preferably, a switch button is installed on one side of the fan outerframe and is electrically connected with the rotating mechanism in thedouble-motor double-blade booster fan.

Preferably, the number of the first leaf blades and the number of thesecond leaf blades are designed according to fluid dynamics toeffectively inhibit generation of noise in the double-motor double-bladebooster fan.

It is known from the above technical solution that compared with theprior art, the present invention discloses and provides a double-motordouble-blade booster fan. Firstly, the first blade is driven through thefirst motor to make forward rotation. The second motor drives the secondblade through the shifting yoke to make reverse rotation. An air flowcollected by the first blade is subjected to reverse boosting to form anair flow beam to obtain higher wind pressure to be converted into windand discharged. The wind pressure can be effectively enhanced through aninteraction between the first blade and the second blade to accelerateair flow, so that a better heat dissipation effect is obtained for heatdissipation components.

Secondly, a distance of 50 to 150 mm is kept between the first blade andthe second blade, and the shifting yoke is installed on the motorbracket. When the first motor drives the first blade and the secondmotor drives the second blade through the shifting yoke to make reverserotation, opposite torques generated by rotation operations of the firstblade and the second blade just cancel each other to avoid instableperformance caused by shake of the booster fan in a use process, therebyeffectively prolonging service life of the booster fan.

Then, the number of the first leaf blades and the number of the secondleaf blades are large, wind volume is increased, and meanwhile, becausethe first leaf blades and the second leaf blades are designed accordingto fluid dynamics, generation of noise can be effectively inhibited andthen the noise generated by the booster fan during operation is reduced.

Finally, the motor bracket of the present invention is not inclined toone side like a fixing component of a traditional fan, so that the firstblade and the second blade can be operated in the center position of thefan outer frame, thereby effectively avoiding a problem of damage to theblades caused by inclination of the motor after long-term use.

The present invention integrates simple structure and stableperformance. Mandatory boosting is performed by using a double-motordouble-blade structure. The present invention not only has larger windvolume and wind pressure than those of a traditional single-bladebooster fan, but also has lower rotational speed than that of thetraditional single-blade booster fan under the same wind pressure orwind volume condition. Moreover, the present invention saves energy, andis a design that integrates efficacy and energy saving.

DESCRIPTION OF THE DRAWINGS

To more clearly describe the technical solution in the embodiments ofthe present invention or in the prior art, the drawings required to beused in the description of the embodiments or the prior art will besimply presented below. Apparently, the drawings in the followingdescription are merely the embodiments of the present invention, and forthose ordinary skilled in the art, other drawings can also be obtainedaccording to the provided drawings without contributing creative labor.

FIG. 1 is a structural schematic diagram 1 of the present invention.

FIG. 2 is a structural schematic diagram 2 of the present invention.

FIG. 3 is a structural schematic diagram of disassembly of the presentinvention.

FIG. 4 is a schematic diagram of a working principle of the presentinvention.

FIG. 5 is a schematic diagram of a structural framework of the presentinvention.

DETAILED DESCRIPTION

The technical solution in the embodiments of the present invention willbe clearly and fully described below in combination with the drawings inthe embodiments of the present invention. Apparently, the describedembodiments are merely part of the embodiments of the present invention,not all of the embodiments. Based on the embodiments in the presentinvention, all other embodiments obtained by those ordinary skilled inthe art without contributing creative labor will belong to theprotection scope of the present invention.

Embodiments of the present invention disclose a double-motordouble-blade booster fan. The double-motor double-blade booster fan notonly has simple structure and stable performance, but also has largerwind volume and wind pressure than those of a traditional single-bladebooster fan, is a design that integrates efficacy and energy saving andhas great market application and popularization values.

See FIG. 1 of the description for details. A double-motor double-bladebooster fan provided in the present invention specifically comprises:

a fan outer frame 1, a rotating mechanism 2 installed in a centerposition of the fan outer frame 1, and a wire 3 (circuit connection)electrically connected with the rotating mechanism 2 and having a USBinterface, wherein the rotating mechanism 2 comprises a motor bracket21; a first motor 22 and a second motor 23 arranged on both ends of themotor bracket 21 respectively; a shifting yoke 211 installed on themotor bracket 21; a first blade 4 installed on an output shaft of thefirst motor 22; and a second blade 5 installed on an output shaft of thesecond motor 23, wherein the first blade 4 comprises a first axle center41 and first leaf blades 42 uniformly dispersed on an outercircumference of the first axle center 41, and the second blade 5comprises a second axle center 51 and second leaf blades 52 uniformlydispersed on an outer circumference of the second axle center 51.

See FIG. 3 for disassembly structures of the first blade 4 and thesecond blade 5.

In addition, the motor bracket 21 of the present invention is notinclined to one side like a fixing component of a traditional fan, sothat the first blade 4 and the second blade 5 can be operated in thecenter position of the fan outer frame, thereby effectively avoiding aproblem of damage to the blades caused by inclination of the motor afterlong-term use.

With reference to FIG. 4, the first blade 4 is driven through the firstmotor 22 to make forward rotation. The second motor 23 drives the secondblade 5 through the shifting yoke 211 to make reverse rotation. An airflow collected by the first blade 4 is subjected to reverse boosting toform an air flow beam to obtain higher wind pressure to be convertedinto wind and discharged. The wind pressure can be effectively enhancedthrough an interaction between the first blade 4 and the second blade 5to accelerate air flow, so that a better heat dissipation effect isobtained for heat dissipation products.

To further optimize the above technical solution, screw holes 11 areformed uniformly at the outer circumference of the fan outer frame 1.

The design of the screw holes 11 can ensure that the booster fan issimply and conveniently installed on components that need heatdissipation.

With reference to FIG. 2, to further optimize the above technicalsolution, the motor bracket 21 is fixedly connected with the fan outerframe 1.

To further optimize the above technical solution, the first blade 4 andthe second blade 5 rotate in opposite directions, and a distance of 50to 150 mm is kept between the first blade 4 and the second blade 5.

It should be noted that, a distance of 50 to 150 mm is kept between thefirst blade 4 and the second blade 5, and the shifting yoke 211 isinstalled on the motor bracket 21. When the first motor 22 drives thefirst blade 4 and the second motor 23 drives the second blade 5 throughthe shifting yoke 211 to make reverse rotation, opposite torquesgenerated by rotation operations of the first blade 4 and the secondblade 5 just cancel each other to avoid instable performance caused byshake of the booster fan in a use process, thereby effectivelyprolonging service life of the booster fan.

To further optimize the above technical solution, a switch button 6 isinstalled on one side of the fan outer frame 1 and is electricallyconnected with the rotating mechanism 2.

The booster fan is connected with the heat dissipation componentsthrough the wire 3 having the USB interface. The switch button 6 isturned on so that the first motor 22 and the second motor 23 on therotating mechanism 2 start to operate for respectively driving the firstblade 4 and the second blade 5 to make reverse rotation, therebyeffectively increasing the wind pressure and accelerating air flow, sothat a better heat dissipation effect is obtained for the heatdissipation components.

With reference to FIG. 3, to further optimize the above technicalsolution, the number of the first leaf blades 42 and the number of thesecond leaf blades 52 are designed according to fluid dynamics toeffectively inhibit generation of noise.

The number of the first leaf blades 42 and the number of the second leafblades 52 are large, wind volume is increased, and meanwhile, becausethe first leaf blades 42 and the second leaf blades 52 are designedaccording to fluid dynamics, generation of noise can be effectivelyinhibited and then the noise generated by the booster fan duringoperation is reduced.

Each embodiment in the description is described in a progressive way.The difference of each embodiment from each other is the focus ofexplanation. The same and similar parts among all of the embodiments canbe referred to each other. For a device disclosed by the embodiments,because the device corresponds to a method disclosed by the embodiments,the device is simply described. Refer to the description of the methodpart for the related part.

The above description of the disclosed embodiments enables those skilledin the art to realize or use the present invention. Many modificationsto these embodiments will be apparent to those skilled in the art. Thegeneral principle defined herein can be realized in other embodimentswithout departing from the spirit or scope of the present invention.Therefore, the present invention will not be limited to theseembodiments shown herein, but will conform to the widest scopeconsistent with the principle and novel features disclosed herein.

1. A double-motor double-blade booster fan, comprising: a fan outerframe (1), a rotating mechanism (2) installed in a center position ofthe fan outer frame (1), and a wire (3) (circuit connection)electrically connected with the rotating mechanism (2) and having a USBinterface, wherein the rotating mechanism (2) comprises a motor bracket(21); a first motor (22) and a second motor (23) arranged on both endsof the motor bracket (21) respectively; a shifting yoke (211) installedon the motor bracket (21); a first blade (4) installed on an outputshaft of the first motor (22); and a second blade (5) installed on anoutput shaft of the second motor (23), wherein the first blade (4)comprises a first axle center (41) and first leaf blades (42) uniformlydispersed on an outer circumference of the first axle center (41), andthe second blade (5) comprises a second axle center (51) and second leafblades (52) uniformly dispersed on an outer circumference of the secondaxle center (51).
 2. The double-motor double-blade booster fan accordingto claim 1, wherein screw holes (11) are formed uniformly at the outercircumference of the fan outer frame (1).
 3. The double-motordouble-blade booster fan according to claim 1, wherein the motor bracket(21) is fixedly connected with the fan outer frame (1).
 4. Thedouble-motor double-blade booster fan according to claim 1, wherein thefirst blade (4) and the second blade (5) rotate in opposite directions,and a distance of 50 to 150 mm is kept between the first blade (4) andthe second blade (5).
 5. The double-motor double-blade booster fanaccording to claim 1, wherein a switch button (6) is installed on oneside of the fan outer frame (1) and is electrically connected with therotating mechanism (2). The double-motor double-blade booster fanaccording to claim 1, wherein the number of the first leaf blades (42)and the number of the second leaf blades (52) are designed according tofluid dynamics to effectively inhibit generation of noise.